Hop server enhancement #4569

[nadment]

• add command line options for (host, port, shutdownport, proxyhost, proxyport,ssl)
• support for override properties on the command line
• add shutdown listener to web server
• add shutdown servlet
• add RemoteHopServer class to interact with a Hop server and clean HopServerMeta
• remove setup hop server syntax by hostname and port
• add HopServerTerminate extension point after shutdown
• all HopServerXXX extension points now provide a HopServer object, rather than a HopServer/WebServer mix
• add command line options --help and --version
• set abbreviateSynopsis and usageHelpAutoWidth to command line

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[bamaer]

we need better option grouping, port appears as sub-option of password, host appears as sub-option of help etc:

  -h, --help              Displays this help message and quits.
      --host=<host>       The server host name or IP address to use.

  -p, --password=<password>
                          The server password. Required for administrative operations only, not for starting the server.
      --port=<port>       The server port to use.

[bamaer]

tested:

• additional options for host, port, username, password,
• -v and -h options
• shutdown/kill only works when correct authentication is provided
• --ssl options doesn't seem to work

[nadment]

For option grouping, this is the behavior of Picoli if we do not define a unique letter for an option.